Western Harebell
Campanula petiolata
Last reviewed: August 2026
Toxicity unknown
Western Harebell (Campanula petiolata) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
medium
Size
12"–24" H × 8"–16" W
Bloom
Jun, Jul, Aug
Native to
AZ, CA, CO, ID and 10 more states
Pollinators
bees, butterflies
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 437 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Campanula petiolata is a charming native bellflower that produces delicate blue or purple bell-shaped flowers from June through August. This compact perennial forms neat clumps with attractive heart-shaped leaves and thrives in partially shaded areas with average moisture.
In an HOA neighborhood
Western Harebell is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
The tubular flowers are particularly attractive to native bees and provide nectar for various butterfly species throughout the summer blooming period.
Common questions
- How much sun does Western Harebell need?
- Western Harebell grows best in part shade conditions.
- When does Western Harebell bloom?
- Western Harebell blooms in June, July, and August.
- Where is Western Harebell native?
- Western Harebell (Campanula petiolata) is native to AZ, CA, CO, ID and 10 more states, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Western Harebell attract?
- Western Harebell draws bees and butterflies.
- Is Western Harebell HOA-friendly?
- Western Harebell is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Western Harebell? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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